Compressed-air talking-machine for phonographs, gramophones, and other speaking-machines.



H. J OLY. COMPRESSED AIR TALKING MACHINE FOR PHONOGRAPHS, GRAMOPHONES, AND OTHER SPEAKING MACHINES.

I APPLIOATION FILED DEG.4,1906. 908,41 1 5' 1 wwrdesszs Patented Dec, 29, 1908.

UNITED snares PATENT oasis HENRY JOLY, or arms, reason, ASSIGNOR T0 COMPAGNIE GENERALE DE PHONOGRAPEES,

CINEMATOGRAPHES' ET APPAREILS DE PRECISION, OF PARIS, FRANCE.

fcomnssEn-Am aux'meoucfimn FOR PHONOGRAPHS, .enmornosrss, arrn O'rmm SPEAKING MACHINES.

$pecification of Letters Patent.

Application mac December 4, 1906. Serial No. 346,242.

To all whom it may concern:

I Be it known that I, Hermit JoLr, citizen It is known that it is possible to make use of the escape of compressed air to enunciate a phonographic record.

In enabling the above mentioned theorem to be put into practice, and forming the object of the present invention, there is'employed a valve having a relatively small surface and of light enough weight for it to be arranged in the passage of a compressed air conductor and which follows exactly the undulations of the phonogram. These parts have as their object to render undulatory the current of airwhich they allow to pass.

Onthe drawings attached to the present description, and which are given as examples, Figure'l is a vertical section on an enlarged scale of a form of carrying out the invention with a valve, applied to a phonographic disk or cylinder. Fig. 2 is a plan of the valve of the above mentioned apparatus. Fi 3 and l are respectively front and side viewsof aii'other form of carrying out the invention applied as in Fig. 1. Figs. 5 and 6 are front and side views of the arrangement, Figs. 3 and 4:, applied to a disk or plate.

The compressed air provided from any reservoir passes through a flexible tube to the mouthpiece 1 and flows into a small box 2, situated in front of the enunciator proper, and which has for its object to form an air reserve (a fly wheel as one might say). At the entrance to this box is arranged a partition 3 formed of two fine wire gage disks having cotton between them, which serves to filter the air passing to the enunciator.

From the box 2 the air, passes into a second box 4, forming the case of the enunciator proper. In this box 4 is arranged a core 5 around which the air circulates freely and which is hermetically attached to one end of the said box. by means of a screwed ring 6. The part of the core 5 opposite to the ring 6 only leaves between its edge and the interior surfaccof the box 4 a very small annular space 9, through which the compressedair can escape. This same part of the core 5 is exactly level'with the corresponding part of the box 4 forming the turned over edgeT, so that these parts are both situated in the same plane. Against the seat thus formed on each side of the space 9 rests the flat annular surface of-a valve 8 made of some light material such as, for example, aluminium. This valve is guided in its movements by a pin 10 which it carries in its center and which passes through the center of a. cover 11 closing the box 4 on this side. The air coming into this part of the box l can only pass through a channel l4 made in the center of the core 5, and it then goes directly to-the trumpet of the instrumentl I According to the manner in which the above arrangement is applied, the valve 8 may either carry directly on the outside extremity of the pin'lO the style 12 which follows the ridge of the ,record, or it may receive its impulse from an intermediate lever 13 which itself carries the style, as shown in the methods of carrying out the arrangement, Figs. 3, 4 and 5,6.

The action is as follows: When the phonograph'is working the mass of the enunciator being comparatively great, the

entire enunciator cannot follow the vibrations inscribed on the disk, but it is not the same with the valve 8, the weight of which is very small and which actuated b the pressure of the air, bears continually with its pin 10 on the phonographic record, thus forming between it and its seat a passage having a section proportional to'the phonographic variations. It is in this space which is always varying, that the compressed air, escapes. There isthus a reproduction of the sounds by the jet of compressed air which escapes through the ordinary trumpet of 'the phonograph. The holes in the valve 8 have for their object to avoid the effects of resistances which the pressure on all the surface of the valve during the escape would produce; the air expanding quickly on the two faces of this valve equalizes the pressure on the two sides.

Figs. 1, 3 and 4 show the arrangement applied to a disk phonograph; in the method of attachment, Fig. 1, the style is carried the ardirectly by the valve 8, while in rangement 3 and 4 it is carried by the intermediate lever, 13. It is evident that the same system may be applied tocylinder phonographs or disk phonographs and also to the machines called gramophones. In

the latter case, as shown by the Figs. 5 and 6 the box 4 of the enunciator is arranged horizontally. The sinuosities registered on the disk are then transferred to the valve by a lever 13. The extremity of this lever carries the needle 16 used in this class of machines. A spring equalizes laterally the pressure of the air and the regulation of the tension of this spring is effected by means of a screw 17.

Having thus described my invention, what I claim is:

1. In a talking machine, the combination with a casing having a receiving chamber provided with an annular seat, of a tubular core extending into said chamber and having a seat concentric with that on the easing, leaving an annular port between them,

a. source of compressed air connected with said receiving chamber, a light valve seating agairst said seatson the casing and the core, and a style connected with said valve. 2. In a talking machine, the combination with a casing having an internal annular seat facin towards one end thereof, of a compresse air pipe entering said casing in the rear of said seat, a tubular core enterin the opposite end of said casing and provide with an annular seat concentric with the seat on the casing, leaving an annular port between them, a light loose valve seating against said seats and exposed to the air pressure coming through said port, and a style connected with said valve.

' In testimony whereof I aflix my signature in presence of two witnesses.

HENRY JOLY.

Witnesses HENRY DANZER, MARION CRESPIN. 

